Gemstone



FIG. 1 is a front view of a gemstone showing my new design;

FIG. 2 is a side view;

FIG. 3 is a top view;

FIG. 4 is a bottom view;

FIG. 5 is an isometric view; and,

FIG. 6 is a top view shown transparent so the bottom as shown in FIG. 4 is visible. 

I claim the ornamental design for a gemstone, as shown and described. 